Device: Raspberry PI 4 OS: Raspberry Pi OS

I have a setup pihole to run on my Raspberry PI with the below network setup.

Wifi - Connected to Guest Network(Static IP:

Ethernet - Connected to Main Network(Static IP:

But when ethernet and wifi are connected at the same time my wifi's IP, is not available for access for my devices in the guest network. But it is available in the main network.

If I disconnect my ethernet cable my wifi's IP address is available for access by my devices in my guest network.

How can I make my wifi's IP address be available on the guest network when ethernet(on the main network) is connected?

  • DO NOT post detail in Comments; edit your Question.
    – Milliways
    Jan 11, 2022 at 6:40
  • 1
    If you have 1 router you have 1 network (VPN excepted)
    – Milliways
    Jan 11, 2022 at 6:41

1 Answer 1


You have a conflict in IP addressing. Both subnets are the same, by the looks of it they're both You must give one of the two networks a different subnet.

  • Thanks for your answer. My router does not have an option to assign different subnets in the guest and main network. Are there any other solutions?
    – Aravind
    Jan 10, 2022 at 19:38
  • If you want to separate the networks, they MUST have different subnets. A router is made for routing between different networks with different subnets and therefore, a router will support this. Or you are trying to do something completely different that you do not describe. And, no, there is no other solution. For the Pi, both interfaces are connected to the same network ( and that is what the Pi sees. Jan 10, 2022 at 19:45
  • Well, mine is a TP-Link Deco and it does not seem to have the option of assigning different subnets for main and guest networks.
    – Aravind
    Jan 10, 2022 at 20:17
  • And how then do you make any difference between guest and main? Jan 10, 2022 at 21:03
  • 1
    It is an option in the router to enable a guest wifi network. And devices in the guest wifi network cannot access devices in the main network.
    – Aravind
    Jan 11, 2022 at 20:17

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